Ordinarily, scientists confronted with clear evidence contrary to a theory will readily accept it and perhaps consider other alternatives.
This is not true with evolutionism. Committed Darwinists will not accept, or even admit, there might be evidence challenging this secular theory of origins. A recent example is found in an article by Jeff Hecht in New Scientist magazine regarding vision of ocean mammals.
Swedish and German researchers have found that 14 species of toothed whales and seals lack pigments found in blue color receptors of the eye. “However,” states Hecht, “they found the pigments in river otters and wolves, close relatives of seals, and in the hippopotamus, which is closely related to whales. This suggests whales and seals lost their color vision after they split off from a common ancestor.”
Hecht states that specialists are “puzzled,” and he quotes another researcher as saying, “Why this happened is a mystery.”
But it’s no mystery at all to creation scientists who see whales as always being whales from the premier chapter of Genesis.
Non-evolutionists are free to look at these data as just one more piece of evidence blocking the fanciful scenario of tetrapod-to-whale transition.